package com.hwf.domain;

import com.alibaba.fastjson.annotation.JSONField;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

@Data
@NoArgsConstructor
public class LoginUser implements UserDetails {

    private User user;

    //封装权限信息的数组
    private List<String> permissions;

    public LoginUser(User user, List<String> permissions) {
        this.user = user;
        this.permissions = permissions;
    }

    //防止每次调用方法都要转化，减少耗时
    @JSONField(serialize = false)  //该成员变量不进行序列化，以便于写入redis
    private List<SimpleGrantedAuthority> authorities;

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        //把permissions中的string类型权限信息封装成一个GrantedAuthority的实现类，以SimpleGrantedAuthority为例
//        List<GrantedAuthority> list = new ArrayList<>();
//        for (String permission : permissions) {
//            SimpleGrantedAuthority simpleGrantedAuthority = new SimpleGrantedAuthority(permission);
//            list.add(simpleGrantedAuthority);
//        }
// return list;
        if (authorities != null)
            return authorities;
        authorities = permissions.stream()
                .map(SimpleGrantedAuthority::new)
                .collect(Collectors.toList());
        return authorities;

    }

    @Override
    public String getPassword() {
        return user.getPassword();
    }

    @Override
    public String getUsername() {
        return user.getUserName();
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }
}
